Yes, that’s what I was trying to do, not the best approach now that I think of it.
This is a great idea, if done correctly it could also make programming the whole sequence way easier. The only problem I see is that the sequences will take longer to test as I’ll constantly have to swap the SD card between the Arduino and my pc.
Tomorrow I’ll clean up my code and upload an example.
If this works out it’s a great solution, but still I would like to know how feasible moving to the Teensy could be.